2017-2018学年高中英语 unit 4 global warming课时作业 新人教版选修6

《2017-2018学年高中英语 unit 4 global warming课时作业 新人教版选修6》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Unit4　Globalwarming【导语】全球气温变暖给南极的企鹅带来了怎样的影响，你知道吗？为了保护他们，我们应该怎么做？Antarctica,thecoldestplaceonEarth,istoocoldformosthumans.It'sadifferentstoryforpenguins，though.SeveraltypesofpenguinsmaketheirhomeinAntarctica.Thebirdswalkwithshortstepsallovertheicycontinent.However，theydon'tallhave“happyfeet”．SomeofA

2、ntarctica'spenguinsareendangered.Theanimals,huntforfoodinwatersoffAntarctica'scoasts.Theyusefloatingseaiceasaplacetorestwhiletheysearch.Inrecentyears,globalwarming,theslowriseofEarth'stemperature,hasbeencausingtheicetomelt.“Globalwarmingisreducingtheamountoffoodforpenguinssothattheycan'tfindenought

3、oeat,”scientistShayeWolfsaid.TurninguptheheatHumansmaybedirectlyresponsibleforthecontinent'stemperaturechanges,accordingtoanewstudyinthejournalNatureGeoscience.TemperaturesinAntarcticausuallydonotgoabovefreezing,or32degreesFahrenheit.Butlatelytheweatherhasbeenheatingup.Peopleaddtoglobalwarmingwhent

4、heydrivecarsoruseelectricity.Thatburnsfossilfuels,suchascoal，oil，andnaturalgas.TheburningoffossilfuelsgivesoffgasesthatwarmEarth.TheharmfulgasesstayintheatmosphereaboveAntarctica,researcherssay.Theyfoundthatthewestsideofthecontinentisespeciallyaffectedbyglobalwarming.Scientistsareconcernedaboutthep

5、ossibilitythatAntarctica'sicemaymeltmoreovertime.Theicycontinentisabout5millionsquaremiles.Itiscoveredbyglaciersandanicecap(冰冠)about7，100feetthick.Iftheicemelts,thatcouldcausesealevelstorisearoundtheworld.Highersealevelscouldleadtodangerousfloodinginsomecountries.CoolfixforAntarcticaExpertsarehopef

6、ulthatconditionsinAntarcticacanbeimproved.Theysaypeoplecanreduceglobalwarmingbyusingcarsandelectricitylessoften.Evenkidscanhelp.Wolfsuggests，“Talktoyourfriendsandfamilyaboutglobalwarming,howitisharmingpenguins,andhowimportantitistostopglobalwarmingtoday.”【词海拾贝】1．Antarctican．南极洲2．penguinn．企鹅3．fossil

7、n．化石；生物4．glaciern．冰河；冰川【问题思考】1．Whycan'tpenguinsfindenoughfoodtoeat?_______________________________________________________答案：Becauseglobalwarmingisreducingtheamountoffoodforthem.2．Whomaybedirectlyresponsibl